Okla. Admin. Code § 300:35-5-7
It shall be unlawful for any person to operate any vessel upon the waters of GRDA, between the hours of one-half hour after sunset and one-half hour before sunrise at any speed in excess of twenty-five (25) miles per hour.
Added at 23 Ok Reg 1329, eff 5-25-06
Amended at 27 Ok Reg 1801, eff 6-25-10